SELECT
BUYER_ADDRESS,
count(DISTINCT tx_hash) as sales,
sum(PRICE_USD) as sales_volume,
median(PRICE_USD) as median_price
FROM
ethereum.core.ez_nft_sales
WHERE
nft_address LIKE lower('0x34d85c9CDeB23FA97cb08333b511ac86E1C4E258')
AND not price_usd is NULL
GROUP BY 1
ORDER BY 3 DESC
LIMIT 20